Your tab will host it and run its rules. A season lasts a while, ends with a vote on one rule, and the next season keeps the rules and whoever comes. Everything else is forgotten.
Propose a change in the constitution above, then vote for one line. Most votes wins; a tie keeps the constitution as it is. The host's tab counts.
A badge is signed by the season that gave it. Carry one in and the host checks it against this society's lineage. It's the only thing that crosses seasons besides the rules.
Your invitation is for you alone and works once.